Here are some Windows Key's Keyboard shortcuts , that can improve your speed on computer:

1. Windows key + R --- Launch Run command
2. Windows key + D --- Minimize all Open Windows
3. Windows key + L --- Lock Your Computer
4. Windows key + Pause/Break --- Show System Propeties
5. Windows key + F --- Launch Search Utility
6. Windows key + E --- Open Windows Exploer
7. Windows key + U --- Launch Utility Manager
8. Windows key + M --- Minimize current Window
9. Windows key + Ctrl+F ---Search Computer on Network
10. Windows key + F1---- Launh windows Help

.......Satish Malanch